lymphoma incidence in New Zealand: Acute leukaemia subtypes in the South Island of New Zealand, 1983–1984

lymphoma incidence in New Zealand: Acute leukaemia subtypes in the South Island of New Zealand, 1983–1984

0145-212h/ti5SJ.W Pergamon +- 0.00 I’rc\* I rd LEUKAEMIA/LYMPHOMA INCIDENCE IN NEW ZEALAND: ACUTE LEUKAEMIA SUBTYPES IN THE SOUTH ISLAND OF NEW ZEA...

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LEUKAEMIA/LYMPHOMA INCIDENCE IN NEW ZEALAND: ACUTE LEUKAEMIA SUBTYPES IN THE SOUTH ISLAND OF NEW ZEALAND, 1983-1984 M. E. J. BEARD, D. N. J. HART, P. HAWKINS, M. SOUTHERIU‘ and P. H. FITZGERALD Department of Haematology and Cytogenetics, Christchurch Hospital, Christchurch, New Zealand TABLE I. THE NEW ZEALAND POPULATION

NEW ZEALAND lies between latitudes 34” S and 48” S in the South Pacific ocean. It is in the path of the midlatitude westerlies and has a temperature, maritime climate. Annual mean temperatures range from 15 to 7.S”C, annual rainfall from X000 to 300 mm, and annual sunshine from 2500 to 1600 hr. New Zealand consists mainly of two islands, the North Island with a population of about 2,322,989 and the South Island with a population of about 852, 748 (1981 census). INCIDENCE

Maori

1964

2,410,210

187,970

1970

2,808,590

225,435

1979

3,124,4OO

285,600

OF LEUKAEMIA/LYMPHOMA IN NEW

ZEALAND subtypes over the past few years at least as judged by the occurrence of patients with a mediastinal mass or with leukaemic cells having a Burkitt-like morphology.

The following information has been obtained from the Cancer Data Section of the New Zealand Annual Health Statistics Report published by the New Zealand Department of Health. Currently the latest published data relates to 1979. Preliminary analysis of unpublished data for the years 1980 to 1982 does not reveal any new trends in the frequency of leukaemia or lymphoma. However, the ICD categories are not readily translated into any of the non-Hodgkin’s lymphoma classifications in current use and significant changes could have occurred in specific subtypes within this group of disorders. Table 1 shows the New Zealand population and Table 2, the standardised cancer incidence rates for the Maori and non-Maori populations. Some marked differences in cancer rates are seen. Hepatitis B antigen and antibody are present in higher frequency in the Maori and this probably accounts for the higher incidence of liver cancer. Table 3 looks at standardised incidence rates within ICD codes 200-208 from 1947 to 1979 and shows the higher incidence of myeloma in the Maori population. Table 4 looks at cancer deaths in New Zealand from 1951 to 1979 and a progressive rise in both “reticuloses” (ICD codes 200-203) and leukaemia (ICD codes 204-207) is seen. Table 5 looks at the number of acute leukaemia registrations from 1976 to 1979. Apart from a higher frequency in males, no other differences or trends are seen. At an anecdotal level, although both T and B ALL occur in New Zealand, no overt increase has been noted in these Abbreviations:

Total

IC’D,

IIiseases. Key words: Ethnic munophenotype.

International groups,

Classification

leukaemia

incidence,

ACUTE LEUKAEMIA SUBTYPES, SOUTH ISLAND, NEW ZEALAND 1983-1984 An attempt was made to analyse all cases of acute leukaemia occurring in a defined area over a 12-month period. Forty-one cases of acute leukaemia occurred in this population of 852,748 or 1 per 20,709 per yr or 4.7 per 100,000 per yr. Detailed analyses were carried out on 31 of these cases. The numbers for each of the major types of acute leukaemia are shown in Table 6. The numbers are too small to draw any definite conclusions but it is slightly surprising that four patients with Ph’positive ALL ivere seen and that all four patients with the blast crisis of CML were lymphoid. Tables 7-10 give detailed haematological, cytogenetic and surface marker correlations. Comment In view of the ICD coding system and the small number of acute leukaemia patients analysed, no definite conclusions can be drawn. However, this study does emphasise the crucial importam?e of cytogenetic analyses in any investigation of the subtypes of acute leukaemia. In the New Zealand context it would appear valuable:

ot

(1) To continue 2-3 yr. (2) To compare

in-

803

the South Island studies for a further the incidence

of the various subtypes

M. E. J. BEAKD er al.

804

of acute leukaemia in Maori and Non-Maori populations. TABLE

2.

*(3) To initiate similar analyses in the non-Hodgkin’s lymphomas.

MAORI AND NON-MAORI STANDARDISEDCANCERINCIDENCERATES 1977-79*

Standardised

Total numbers 1977-1979

rates

per 100,000 population Maori

Non-Maori

Maori

Non-Maori

Stomach

21.1

9.4

78

1079

Large intestine

11.o

28.0

49

2970

7.0

13.5

24

1433

7.9

I.7

30

172

6.6

39

716

32.1

271

3425

Rectum & rectosigmoid

junction

Liver Pancreas

Il.7

Lung

17.7

Melanoma

of skin

Breast Cervix

Uteri

1.3

17.0

57.6

60.2

128

8

3044

IS46

23.8

12.9

62

598

290.4

243.1

All sites

(I 40-207)

*No significant differences brain and thyroid.

for oesophagus,

ovary,

1177

prostate,

25,088

testis, bladder,

kidney,

TABLE 3. MAORIAND NON-MAORISTAKDARDI~EDINCIDENCERATES

Standardised rates per 100,OCG population

Site

Maori

Total numbers

Non-hlaori

.Maorl

Non-Maori

1974-1976 Lymphosarcoma cell sarcoma Multiple

myeloma

Lymphatic Myeloid

and reticulum

leukaemia

leukaemia

All sites (140-207)

3.1

2.8

14

279

5.4

2.5

13

267

2.3

2.7

II

270

6.8

3.5

30

346

304.0

237.3

1070

23,477

3.2

3.4

17

344

5.6

2.7

21

295

1.6

2.8

I2

273

3.9

3.3

21

329

290.4

243.1

1177

25,088

1977-1979 Lymphosarcoma cell sarcoma Multiple

myeloma

Lymphatic Myeloid

and reticulum

leukaemia

leukaemia

All sites (140-207) ___--

___.

ALL in New Zealand

805

TABLE 4. CANCER DATA IN NEW ZEALAND. WORLD STANDARDISED RATES PER 100,000 POPULATION

1966-70

1961-55

1951-5s

1976-80

M

F

M

F

M

F

M

F

M

F

200-203

reticuloses

5

3

8

4

1

5

9

5

8

6

204-207

leukaemia

5

4

6

5

5

3

7

5

7

4

TABLE

TABLE 5. LEUKAEMIC REGISTRATIONS

Leukaemia

1971-7s

MEAN

Sex

Detailed

6.

TYPES OF ACUTE 1983-1984

site numbers

Total

1976

1977

1978

1979

LEUKAEMIA

Detailed

testing

AML

M

13

25

27

17

204.0

F

17

14

9

17

ALL (Ph’)

4

4

AUL

2

2

ALL

M

57

43

52

43

205.0

F

34

35

40

41

Other AL

M

5

3

8

6

207.0

F

6

5

2

3

CMLBC -

myeloid

0

0

-

lymphoid

3

3

41

31

208.0 Totals

TABLE 7. DETAILED ANALYSES OF 31 PATIENTSWITH ACUTE LEUKAEMIA 1983-84 - ACUTE MYELOID LEUKAES~IA Cytogenetics

AML FAB type

JR

M4

Normal

NM

M2

45,5q-12q-22q

CR

M6

Probably

RN

MI

RG

Surface

+

normal

marker analysis

CH-CH*

LRF Centret

AMML

AML

AML

AML

EL

EL

Normal

AML

AML

Ml

Normal

AML

AML

WK

M3

t (15;17)

APML

AML

RD

M2

Multiple

AML

AML

JO’C

M2

47, + 8

AML

AML

BS

Ml

48, +C+C

AML

AML

AK

M2

t (8;21)

AML

AML

SC

M5

Normal

AMoL

AML

t (11;18)

RP

M2

t (5;16)

AML

AML

ML

Ml

Normal

AML

AML

AB

?Ml

Normal

AML

AML

*Christchurch tLeukaemia

Hospital, Christchurch Research Fund Centre.

this issue for details.

(New Zealand). See paper by Greaves

et al. in

M. E. J.

806

BEARDef

at.

TABLE 8. DETAILED ANALYSES OF 31 PATIENTS WITH ACUTE LEUKAEMIA ACUTE LEUKAEMIA ? LYMPHOID Surface

ALL FAB

marker analyses Centre

type

Cytogenetics

GF ALL L2

48147

c-ALL

c-ALL

HF ALLLI

Normal

c-ALL

c-ALL

AN ALL Ll

so/51

c-ALL

c-ALL

LB ALLLl

Multiple abnormal

c-ALL

c-ALL

MK ALL Ll

Normal

T ALL

T ALL

AG ALL Ll

56 multiple

c-ALL

c-ALL

OM ALL L2

Normal

c-ALL

c-ALL

KR ALL Ll

Normal

AL ? type

ALL unclass.

CH-CH

LRF

TABLE 9. DETAILED ANALYSES OF 31 PATIENTS WITH ACUTE LEUKAEMIA 1983-84 - ACUTE LEUKAEMIA(UNDIFFERESTIATED)

Acute leukaemia type

AP

Cytogenetics

CH-CH

LRF Centre

Multiple

AL ? type

Uncertain

AML(?) t (9;14)

AL ? type

Uncertain

AL (?)

IB

Surface marker analysis

TABLE 10. DETAILED ANALYSES OF 31 PATIENTSWITH ACUTE LEUUEMIA 1983-84

Type of acute leukaemia

-

Ph’ POSITIVELEUKAEMIA

Surface marker analyses

Cytogenetics

LRF Centre

CH-CH

t (9;22) t (9;22) t (9;22)

CMLBC lymphoid

CALL +

CMLBC lymphoid

CALL +

CMLBC lymphoid

CMLBC lymphoid

CALL-

CMLBC lymphoid

Ll

Multiple all t (9;22)

Ph’ + ALL

CALL +

CMLBC lymphoid

L2

48 all t (9;22)

Ph’ + AL

CALL-

CMLBC

NH

CMLBC

Ll

NF

CMLBC

Ll

SB

CMLBC

Ll

TO

ALL

MT

ALL

KS

ALL

L2

Multiple all t (9;22)

JB

ALL

L2

1 metaphase

double

t (9;22)

CMLBC lymphoid

Ph’ + AL

CALL-

ALL unclass subtype

Ph’ + AL

CALL-

ALL unclass subtype

ALL in New Zealand

ADDENDUM

Island (Prof. J. D. Wilson). This centre is expected to see more Maori and Polynesian patients than Christchurch in the South Island. The ALL subgroup data from Auckland is provided in Table 1A. The numbers to date are small but it is of interest to note that both common ALL and T-ALL are recorded in Maori and Polynesian patients.

Editors’ note: ALL subtypes of patients from North Island, New Zealand (Auckland). Seventeen patients with ALL have also been entered into the study by the New Zealand group based in Auckland, North

TABLE

1A. ALL

807

SUBSETS:

AUCKLAND,

Patient

Age/sex

Subset

NEW

ZEALAND

Ethnic group

I

21 a

T

W

2

19 cr

T

Indian

3

21 w

T

Maori

4

15 a

T

W

5

18 u

T

Polynesian (W. Samoa)

6

15 w

T

W

7

6Oa

CALL

Maori

8

17 0

CALL

W

9

18 w

CALL

W

10

2a

CALL

W

11 12

89 5w

CALL

W

CALL

W

11 9

CALL

W

13 14

39

CALL

W

15

15 Q

CALL

Polynesian

I6

52 Q

null-ALL W

17

78 0

null-ALL W

W = White.